PLATE, Iben, SC HALLWYL, Idina SHI, Lumir KREJCI, C. MULLER, L. ALBERTSEN, Patrick SUNG and Uffe MORTENSEN. Interaction with RPA Is Necessary for Rad52 Repair Center Formation and for Its Mediator Activity. J. Biol. Chem. 2008, vol. 24, No 283, p. 29077-, 8 pp. ISSN 0021-9258.
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Basic information
Original name Interaction with RPA Is Necessary for Rad52 Repair Center Formation and for Its Mediator Activity.
Name in Czech Interakce s RPA je nezbytná pro vznik Rad52 opravného centra a jeho mediátorové aktivity
Authors PLATE, Iben (208 Denmark), SC HALLWYL (208 Denmark), Idina SHI (840 United States of America), Lumir KREJCI (203 Czech Republic, guarantor), C. MULLER (208 Denmark), L. ALBERTSEN (208 Denmark), Patrick SUNG (840 United States of America) and Uffe MORTENSEN (208 Denmark).
Edition J. Biol. Chem. 2008, 0021-9258.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 5.520
RIV identification code RIV/00216224:14310/08:00026744
Organization unit Faculty of Science
UT WoS 000260179900035
Keywords in English Rad52; recombination mediator; DNA repair
Tags DNA repair, Rad52, recombination mediator
Tags International impact, Reviewed
Changed by Changed by: doc. Mgr. Lumír Krejčí, Ph.D., učo 18098. Changed: 24/6/2009 07:34.
Abstract
Homologous recombination (HR) is a major DNA repair pathway and therefore essential for maintaining the integrity of the genome. HR is catalyzed by proteins encoded by genes of the RAD52 epistasis group, including the recombinase Rad51 and its mediator Rad52. HR proteins fused with green fluorescent protein form foci at damaged DNA reflecting the assembly of repair centers that harbor a high concentration of repair proteins. Rad52 mediates the recruitment of Rad51 and other HR proteins to DNA damage. To understand the mechanism for the assembly of Rad52-dependent DNA repair centers, we used a mutational strategy to identify a Rad52 domain essential for its recruitment to DNA repair foci. We present evidence to implicate an acidic domain in Rad52 in DNA repair focus formation. Mutations in this domain confer marked DNA damage sensitivity and recombination deficiency. Importantly, these Rad52 mutants are specifically compromised for interaction with the single-stranded DNA-binding factor RPA. Based on these findings, we propose a model where Rad52 displaces RPA from single-stranded DNA using the acidic domain as a molecular lever.
Abstract (in Czech)
Homologous recombination (HR) is a major DNA repair pathway and therefore essential for maintaining the integrity of the genome. HR is catalyzed by proteins encoded by genes of the RAD52 epistasis group, including the recombinase Rad51 and its mediator Rad52. HR proteins fused with green fluorescent protein form foci at damaged DNA reflecting the assembly of repair centers that harbor a high concentration of repair proteins. Rad52 mediates the recruitment of Rad51 and other HR proteins to DNA damage. To understand the mechanism for the assembly of Rad52-dependent DNA repair centers, we used a mutational strategy to identify a Rad52 domain essential for its recruitment to DNA repair foci. We present evidence to implicate an acidic domain in Rad52 in DNA repair focus formation. Mutations in this domain confer marked DNA damage sensitivity and recombination deficiency. Importantly, these Rad52 mutants are specifically compromised for interaction with the single-stranded DNA-binding factor RPA. Based on these findings, we propose a model where Rad52 displaces RPA from single-stranded DNA using the acidic domain as a molecular lever.
Links
LC06030, research and development projectName: Biomolekulární centrum
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular centre
ME 888, research and development projectName: Srs2 protein a jeho multifunkční úloha při rekombinančních /opravných procesech
Investor: Ministry of Education, Youth and Sports of the CR, Srs2 protein and its multi-functional role in rekombination/repair processes
MSM0021622413, plan (intention)Name: Proteiny v metabolismu a při interakci organismů s prostředím
Investor: Ministry of Education, Youth and Sports of the CR, Proteins in metabolism and interaction of organisms with the environment
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